rainwater
noun
water fallen as rain.
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rainwater
1 American
[reyn-waw-ter, -wot-er]
/ ˈreɪnˌwɔ tər, -ˌwɒt ər /
noun
Rainwater
2
American
[reyn-waw-ter, -wot-er]
/ ˈreɪnˌwɔ tər, -ˌwɒt ər /
noun
rainwater
British
/ ˈreɪnˌwɔːtə /
noun
Etymology
Origin of rainwater
before 1000; Middle English rein water, Old English regn-wæter; see rain, water
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Among those technologies is direct air capture—in which carbon is absorbed from the atmosphere, enhanced rock weathering where rocks like basalt are spread over farm fields to capture dissolved carbon in rainwater.
From The Wall Street Journal ● Jun. 17, 2026
Liou and her gardener helped Lee install it and build a bioswale to catch rainwater, using stones from Valley Builders Supply and some larger rocks from Bourget Bros.
From Los Angeles Times ● Jun. 10, 2026
Oil fires can also release sulphur and nitrogen oxides, which can form acids if they dissolve in rainwater, as well as other harmful hydrocarbons, metallic compounds and droplets of oil.
From BBC ● Mar. 10, 2026
These included data from Arctic ice-cores and rainwater samples collected around the world.
From Science Daily ● Feb. 6, 2026
The rainwater tastes so sweet, I would think it had honey in it.
From "Blood on the River" by Elisa Carbone
The study was funded by the Rainwater Charitable Foundation/Tau Consortium, the National Institutes of Health and other sources.
From Science Daily ● Mar. 3, 2026
Alumni from “Yellowstone” returning in “Marshals” include Gil Birmingham as tribal Chairman Thomas Rainwater and Mo Brings Plenty as his confidante Mo.
From Los Angeles Times ● Mar. 1, 2026
Joseph Shaposhnik, portfolio manager of the Rainwater Equity ETF, substantially reduced his exposure to software names over the summer, including selling most of his position in Constellation Software Inc.
From MarketWatch ● Feb. 4, 2026
Rainwater, ice and glacier meltwater accumulate in Suicide Basin.
From The Wall Street Journal ● Aug. 13, 2025
Rainwater dripping from the roof splattered in the mud below.
From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
